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Finding the Fourth Proportional to 469,918.98, 648,470.81 and 255,054.46

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Solution

The fourth proportional to 469,918.98, 648,470.81 and 255,054.46 is: 351,965.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,918.98 : 648,470.81 = 255,054.46 : x
  2. Step 2: Convert to fraction form
    469,918.98/648,470.81 = 255,054.46/x
  3. Step 3: Cross multiply
    469,918.98x = 648,470.81 × 255,054.46
  4. Step 4: Simplify right side
    469,918.98x = 165,395,372,270.31
  5. Step 5: Solve for x
    x = 165,395,372,270.31/469,918.98
  6. Step 6: Final answer
    x = 351,965.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.